…(c) Backward-curved fan Also called a turbo fan, it has an impeller with 12 to 24 blades arranged on the main and side plates (Figure 1-c). The blades are made by processing thin plates, and are curved backward in the direction of rotation with an outlet angle of 30 to 50 degrees (called backward-curved blades), and are welded or riveted to the main and side plates, respectively. The discharge pressure is usually in the range of 250 Pa to 4 kPa, but there are some that are up to about 15 kPa. … *Some of the terminology that refers to "backward wings" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(c)後向きファン ターボファンとも呼ばれ,主板,側板に12~24枚の羽根が配列された羽根車をもつ(図1‐c)。羽根は薄板を加工して作られ,出口角度が30~50度で回転方向に後向きに湾曲しており(後向き羽根という),主板,側板にそれぞれ溶接,またはリベット締めされている。吐出圧力は通常250Pa~4kPaの範囲であるが,約15kPaまでのものがある。… ※「後向き羽根」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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